Ecchi na Koto Oshiete Kudasai

Growing up in the countryside, Hiroya hid his orientation until he moved to Tokyo. Living in the big city, he wants to finally experience life! The problem is, he's a total virgin! Unsure of himself and enlists the help of a pro! The cool and collected Take is an experienced escort ready to teach Hiroya everything he needs to know. Can Hiroya learn everything he needs to know about sex before he becomes enthralled by Take?

(Source: Frontier Works)